import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken, getExpiresTime, getRefreshToken } from '@/utils/auth'
import { refreshToken } from '@/api/refresh.js'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 300000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  async config => {
    // do something before request is sent
    //每个API接口都要执行请求拦截
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      // config.headers['X-Token'] = getToken()
      //令牌使用了Bearer加密类型

      // 判断当前时间是否超过过期时间，超过了换令牌


      if (Date.now() >= getExpiresTime()) {// 过期以后      

        try {
          // console.log('换令牌');
          let { data } = await refreshToken()

          await store.dispatch('user/setRefrshToken', data)  // 重新后端获取的新令牌和新的过期令牌
          // console.log('换令牌成功');
        } catch (error) {
          console.log(error);
        }
      }

      // console.log('令牌正常');
      config.headers['Authorization'] = 'Bearer ' + getToken()

    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */

  //所有的响应数据，都要先执行响应拦截
  response => {
    const res = response.data

    // console.log('请求返回：',res)

    return res

    // if the custom code is not 20000, it is judged as an error.
    // if (res.code !== 20000) {
    //   Message({
    //     message: res.message || 'Error',
    //     type: 'error',
    //     duration: 5 * 1000
    //   })

    // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
    //   if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
    //     // to re-login
    //     MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
    //       confirmButtonText: 'Re-Login',
    //       cancelButtonText: 'Cancel',
    //       type: 'warning'
    //     }).then(() => {
    //       store.dispatch('user/resetToken').then(() => {
    //         location.reload()
    //       })
    //     })
    //   }
    //   return Promise.reject(new Error(res.message || 'Error'))
    // } else {
    //   return res
    // }
  },
  error => {
    // console.log('err' + error) // for debug
    // Message({
    //   message: error.message,
    //   type: 'error',
    //   duration: 5 * 1000
    // })
    // return Promise.reject(error)



    if (error.response) {
      switch (error.response.status) {
        case 401:
          // console.info("11",store.getters.token);
          Message.error({
            message: '未授权，请登录',
            onClose: function () {
              router.push({ name: 'login' });
            }
          })
          break
        case 403:
          Message.error({
            message: '接口授权错误，请检查授权！',
            onClose: function () {
              router.push({ name: 'error-403' });
            }
          })
          break
        case 404:
          Message.error({
            message: '请求的接口地址不存在！',
            onClose: function () {
              router.push({ name: 'error-404' });
            }
          })
          break
        case 408:
          Message.error({
            message: '请求超时',
            onClose: function () {
              router.push({ name: 'error-404' });
            }
          })
          break
        case 500:
          Message.error({
            message: '服务器内部错误，请查看后端接口程序。',
            onClose: function () {
              router.push({ name: 'error-500' });
            }
          })
          break
        default:
          Message.error({
            message: error.response.data.message,
            onClose: function () {
              router.push({ name: 'error-500' });
            }
          })
      }
    }

    return Promise.reject(error)


  }
)

export default service
